/Engine/Source/Editor/Experimental/EditorInteractiveToolsFramework/Public/InteractiveToolStack.h
Add the tool to our internal tool array
int32 AddTool ( const [FString](API\Runtime\Core\Containers\FString) & InToolName, const [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [FUICommandInfo](API\Runtime\Slate\Framework\Commands\FUICommandInfo) > & InUICommand )